Compression bottom stops for separable fastener stringers



May 26, 1959 'L. H; MORINY 49 COMPRESSION BOTTOM STOPS FOR SEPARABLEFASTENER S'IIRINGERS Filed April 20, 1955 INVENTOR. LOU I5 H. MORINATTORNEY United States Patent COMPRESSION BOTTOM STOPS FOR SEPARABLEFASTENER STRINGERS Louis H. Morin, Bronx, N.Y.

Application April 20, 1955, Serial No. 502,577

Claims. (Cl. 24-205.11)

This invention relates to separable fastener stringers of the typeemploying a slider movable along stringer' The novel features of theinvention will be best understood from the following description, whentaken together with the accompanying drawing, in which certainembodiments of the invention are disclosed and, in which, the separateparts are designated by suitable reference characters in each of theviews and, in which: i I

Fig. l is a diagrammatic perspective and sectional view illustrating abottom stop arranged upon a pair of string ers and indicating end scoopsand .part of a slider.

Fig. 2 is a perspective view of a bottom stop, such as shown in Fig. 1,detached; and

Fig. 3 is a view, similar to Fig. 2, showing a modified form ofconstruction.

With bottom stops of the type and kind under consideration, ditficultyhas been experienced from the standpoint of maintaining alinement of theend scoops and applying strains to the slider walls by engagement of thewalls proper with upwardly and downwardly protruding stop lugs on thebottom stops, the latter having a tendency to spread the slider walls.

Still further, provision of upwardly or upwardly and downwardlyprojecting stop lugs on the bottom stops creates an undesirable bulk inthe overall thicknessof the bottom stop, which is undesirable in manyuses of the fastener, particularly on various types and kinds of wearingapparel.

In overcoming these difiiculties and objectionable features, I haveprovided a bottom stop structure, wherein the overall thickness of thebottom stop is within the limits of the thickness of the scoops of thestringer. Further, the stop lugs are provided on opposed side edges ofthe bottom stop, so as to abut the flanged sides of the slider, thusdispensing with any stress or strain, tending to spread the sliderwalls. Still further, the bottom stop includes projecting lugs on upperand lower wall portions thereof to extend toward or engage the end scoopof the shorter stringer; whereas, the end scoop of the longer stringeris disposed in close proximity to or abuts the normal end wall of thebottom stop, thus maintaining the two end scoops in alinement andcoupled relationship with each other to insure proper couplingengagement of the stringers in the operation of coupling the stringers.Further, the stop lugs are so positioned on the bottom stop as to permitthe endof the slider to extend onto and house part of the wall structureofthe bottom stop.

In Fig. 1 of the drawing, I have diagrammatically shown, at 10 and 11,the tapes of a pair of stringers hav- Ice ing beaded edges 12 and 13. At14 I have shown one end scoop of a number of scoops applied to thebeaded edge 12 of the tape 10 and at 15 is shown the end scoop of aseries of scoops applied to the beaded edge 13 of the tape 11. At 16 and17, I have shown part of the opposed walls of a slider 18, the wallshaving flanged sides 19 and 20, respectively, these flanged sidesdefining the channel or channels of the slider body and, at 21, I haveindicated, in part, the forward end of the frog or connecting web of theslider, which joins the walls 16 and 17 at the wide end portion of theslider, as with other devices of this type and kind.

At 22 I have shown one of my improved bottom stops which comprises a diecast box-like body, defined by walls 23 and 24, joined and spaced by acentral web 25, the web forming, at each side of the body, longitudinalchannels 26 and 27 for receiving the beaded edges 12 and 13 of the tapes10 and 11, as noted in Fig. 1 of the drawmg.-

The walls 23 and 24 have, atone side thereof, and in alinement with thechannel 27, projecting lugs 28 which extend beyond the end surface 29 asuflicient distance to abut the end scoop 15, while also permitting thesurface 29 to abut the end scoop '14, in the manner diagrammaticallyseen in Fig. 1 of the drawing.

In the construction shown in Figs. 1 and 2, the wall 23 only haslaterally projecting side lugs 30 which are arranged in the plane of thewall 23, these lugs having right angle front surfaces 31 and roundedrear surfaces 32.

' In moulding the end stops 22, it will be understood that the channels26 and 2'7 are made sufliciently large to snugly, but freely, receivethe beaded edges 12, 13, after which, pressure is applied to the walls23 and 24 to compress the web 25 and to move these walls toward eachother in securely crimping the end s'top upon the beaded edges 12 and13. This is accomplished with the end stop in abutting engagement withthe end scoops 14 and 15, in the manner illustrated in Fig. l of thedrawing.

In Fig. 3 of the drawing, I-have shown a slight modification in thestructure of the end stop and, for this reason, like prime referenceswill indicate corresponding parts, the end stop being designated by thereference character 22, the walls at 23', 24, the web at 25, thechannels at 26', 27', the projecting lugs at 28, the end surfaces at 29'and the laterally projecting lugs at 30'. The lugs 30' are of the' samestructure as the lugs 30 and, therefore, will not be further'described.

In the structure shown in Fig. 3, the bottomv wall has similar laterallyprojecting lugs 33 arranged in alinement with the lugs 30' so as toestablish abutting engagement with the flanges 20 of the slider wall 17.v

Considering Fig. l of'the drawing, it will" be apparent that, when theslider 18 is in abutting engagement with the lugs 30, asdiagrammatically seen in Fig. 1 of the drawing, the contracted endportion 18 of the slider overlies the walls 23 and 24 of the bottom stopinwardly of the lugs 30. It will, thus, be apparent that, by virtue ofthis arrangement, the frog 21 does not exert any direct strain upon theend scoops 14 and 15, tending to separate said scoops. In other words,these scoops are maintained in coupled relationship at all times, thusinl thickness of the scoops on the stringers, thus producing 3 a smoothsurface on the resulting fastener which will adapt the same forcomfortable use upon the various types and kinds of wearing apparel.

Having fully described my invention, what I claim as new and desire tosecure by Letters ,Patent is: l. Ina separable fastener comprising apair of beade stringer tapes having scoops spaced along opposed edgesthereof and a flangedslider movably mounted thereon, an improvednon-detachable, integrally formed, bottom stop for engaging and checkingthe movement of said slider, said stop comprising a die cast body havingupper and lower ends disposed toward the fastener closing and openingdirections, respectively, said body having opposed top and bottom wallsdisposed on opposite sides of said fastener and joined by a central web,said walls having smooth, flat outer surfaces substantially parallel tothe plane of said tapes, a tape bead-receiving channel on each lateralside of the web defined by said web and walls, said web being disposedbetween opposed tape beads, said walls compressively engaging a tapebead in each said channel; the upper ends of said walls on one lateralside portion of the body engaging the end scoop of only one of saidstringers, an extension on the upper end of each said wall on the otherlateral side portion of said body, each said extension engaging the endscoop of only the opposed stringer, said engagement of said walls withsaid opposed end scoops serving to maintain said end scoops in alignmentrelatively to each other; a laterally extending projection on eachlateral edge of each wall disposed intermediate of, and spaced from, theends of said body, the projections on one wall being transverselyaligned with the projections on the opposed wall, each projection havinga surface extending normally to said lateral edge of said wall andfacing the upper end of said body; said outer surfaces of said walls,and opposed lateral edges of said walls extending between saidprojections and the upper end of said body, being substantially flushwith corresponding surfaces and edges, respectively, of said opposed endscoops; said slider being movable in the fastener opening direction pastsaid end scoops and over said body so as to partially enclose thelatter, said surfaces on said projections engaging upper and lowerflange ends only on opposed walls of said sliderto check movement of theslider at a point where said opposed end scoops are still coupledtogether, the engagement of said projections with said flange endsaiding to evenly distribute the strain of impact of the slider againstsaid stop, thereby to avoid any tendency to spread apart the sliderwalls, said opposed end scoops being always coupled together and beingthereby adapted to facilitate coupling of the stringers when the slideris moved in fastener closing direction.

2. In a non-detachable bottom stop for a separable fastener comprising apair of stringer tapes having scoops thereon and a flanged slidermovably mounted on said stringers, said stop being adapted to engage andcheck the movement of said slider and comprising a body having upper andlower ends disposed toward the fastener closing and opening directions,respectively, said body having opposed top and bottom walls disposed onopposite sides of said fastener and joined by a central web, a tapebead-receiving channel on each lateral side of the web defined by saidweb and walls, said web being disposable between opposed tape heads, theimprovement wherein said web is compressible to move said walls towardeach other to retain a tape bead in each said channel, the upper ends ofsaid walls on one lateral side portion of the body extending towardtheend scoop of only one of said stringers, a part on the upper end ofeach said wall on the other lateral side portion of said body extendingtoward the opposed end scoop of only the opposed stringer, saidextension of saidwalls toward said opposed end scoops helping tomaintain said end scoops in coupled alignment relatively to each other,a

laterally extending projection on each lateral edge of each walldisposedintermediate of, and entirely spaced from, the ends of saidbody, said projections, when said slider is moved in fastener openingdirection, being adapted to engage upper and lower flange ends only onopposed walls of said slider to check movement thereof at a point wheresaid opposed end scoops are still coupled together, the engagement ofsaid projections with said flange ends aiding to evenly distribute thestrain of impact of the slider against said stop, said stop acting toretain said opposed end scoops in coupled relation thereby to facilitatecoupling of the stringers when the slider is moved in fastener closingdirection.

3. In a non-detachable bottom stop for a separable fastener comprising apair of stringer tapes having scoops thereon and a flanged slidermovably mounted on said stringers, said stop being adapted to engage andcheck the movement of said slider and comprising a body having upper andlower ends disposed toward the fastener closing and opening directions,respectively, said body having opposed top and bottom walls disposed onopposite sides of said fastener, and joined by a central web, a tapebead-receiving channel on each lateral side of the web defined by saidweb and walls, said web being disposable between opposed tape beads, theimprovement wherein said web is compressible to enable said walls toretain a tape bead in each said channel, the upper ends of said walls onone lateral side portion of the body being in contact with the end scoopof one of said stringers, the other lateral side portion of said bodyhaving on the upper end of each said wall an extension in contact withthe opposed end scoop of the opposed stringer, said contact engagementof said walls with said opposed end scoops serving to maintain said endscoops in coupled alignment relatively to each other, a pair oflaterally extending, transversely aligned projections on oppositelateral edges of at least one wall disposed intermediate of, and spacedfrom, the ends of said body, said projections, when said slider is movedin fastener opening direction, being adapted to engage only ends of theflanges of said slider to check movement thereof at a point where saidopposed end scoops are still coupled together, thereby to avoid anytendency to spread apart the slider walls, said stop acting to retainsaid opposed end scoops in coupled relation thereby to facilitatecoupling of the stringers when the slider is moved in fastener closingdirection.

4. In a non-detachable bottom stop for a separable fastener comprising apair of stringer tapes having scoops thereon and a flanged slidermovably mounted on said stringers, said stop being adapted to engage andcheck the movement of said slider and comprising a body having upper andlower ends disposed toward the fastener closing and opening directions,respectively, said body having opposed top and bottom walls disposed onopposite sides of said fastener and joined by a central web, a tapebead-receiving channel on each lateral side of the web defined by saidweb and walls, said web being disposable between opposed tape beads, theimprovement wherein said web is compressible to enable said walls toretain a tape head in each said channel, said walls having smooth flatouter surfaces, the disposition of said walls relatively to opposed endscoops of said stringers helping to maintain said opposed end scoops incoupled alignment relatively to each other, a pair of laterallyextending, transversely aligned projections on opposite lateral edges ofat least one wall spaced from the lower end of said body, said sliderbeing movable in the fastener opening direction past said end scoops andover said body so as to partially enclose the latter, said projectionsbeing adapted to engage ends only of the flanges of said slider to checkmovement thereof at a point where said opposed end scoops are stillcoupled together, the engagement of said projections with said flangeends aiding to distribute the strain of impact of the slider againstsaid stop, thereby to avoid any tendency to spread apart the sliderwalls, said stop acting to retain said opposed end scoops in coupledrelation thereby to facilitate coupling of the stringers when the slideris moved in fastener closing direction.

5. In a non-detachable bottom stop for a separable fastener comprising apair of stringer tapes having scoops thereon and a flanged slidermovably mounted on said stringers, said stop being adapted to engage andcheck the movement of said slider and comprising a body having upper andlower ends disposed toward the fastener closing and opening directions,respectively, said body having opposed top and bottom walls disposed onopposite sides of said fastener and joined by a central compressibleweb, a tape bead-receiving channel on each lateral side of the webdefined by said web and walls, the improvement wherein the upper ends ofsaid walls on one lateral side portion of the body are disposed in closeproximity to the end scoop of one of said stringers, the other lateralside portion of said body having on the upper end of each said wall anextension disposed in close proximity to the opposed end scoop of theopposed stringer, said disposition of said walls relatively to saidopposed end scoops serving to maintain said end scoops in alignmentrelatively to each other, a pair of laterally extending, transverselyaligned projections on up posite lateral edges of at least one wallspaced from the lower end of said body, said projections, when saidslider is moved in fastener opening direction, being adapted to engagethe flange ends only of said slider to check movement thereof at a pointwhere said opposed end scoops are still coupled together, the engagementof said projections with said flange ends aiding to distribute thestrain of impact of the slider against said stop, said stop acting toretain said opposed end scoops in coupled relation thereby to facilitatecoupling of the stringers when the slider is moved in fastener closingdirection.

References Cited in the file of this patent UNITED STATES PATENTS CanadaSept. 18, 1951

